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/* types.h: general types.
Copyright (C) 1992 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef TYPES_H
#define TYPES_H
/* Booleans. */
typedef enum { false = 0, true = 1 } boolean;
/* The X11 library defines `FALSE' and `TRUE', and so we only want to
define them if necessary. */
#ifndef FALSE
#define FALSE false
#define TRUE true
#endif /* FALSE */
/* The usual null-terminated string. */
typedef char *string;
/* A generic pointer in ANSI C. */
typedef void *address;
/* We use `real' for our floating-point variables. */
typedef double real;
/* A character code. Perhaps someday we will allow for 16-bit
character codes, but for now we are restricted to 256 characters per
font (like TeX and PostScript). */
typedef unsigned char charcode_type;
/* Used in file formats. */
typedef unsigned char one_byte;
typedef signed char signed_byte;
typedef unsigned short two_bytes;
typedef short signed_2_bytes;
typedef unsigned int four_bytes;
typedef int signed_4_bytes;
typedef int byte_count_type;
/* These are intended to be used for output in file formats where a
``byte'' is defined to be eight bits, regardless of the hardware. */
#define ONE_BYTE_BIG (1 << 8)
#define TWO_BYTES_BIG (1 << 16)
#define THREE_BYTES_BIG (1 << 24)
/* Complex numbers. */
typedef struct
{
real real;
real imag;
} complex;
typedef enum { first_complex_part, second_complex_part} complex_part_type;
typedef enum { polar_rep, rectangular_rep} complex_rep_type;
/* Dimensions of a rectangle. */
typedef struct
{
unsigned height, width;
} dimensions_type;
#define DIMENSIONS_HEIGHT(d) ((d).height)
#define DIMENSIONS_WIDTH(d) ((d).width)
/* Cartesian points. */
typedef struct
{
int x, y;
} coordinate_type;
typedef struct
{
double x, y;
} real_coordinate_type;
#if 0
typedef struct
{
double align_threshold;
double corner_always_threshold;
unsigned int corner_surround;
double corner_threshold;
double error_threshold;
unsigned int filter_alternative_surround;
double filter_epsilon;
unsigned int filter_iteration_count;
double filter_percent;
unsigned int filter_secondary_surround;
unsigned int filter_surround;
boolean keep_knees;
double line_reversion_threshold;
double line_threshold;
double reparameterize_improvement;
double reparameterize_threshold;
double subdivide_search;
unsigned int subdivide_surround;
double subdivide_threshold;
unsigned int tangent_surround;
} SELVALS;
#else
typedef struct
{
double align_threshold;
double corner_always_threshold;
double corner_surround;
double corner_threshold;
double error_threshold;
double filter_alternative_surround;
double filter_epsilon;
double filter_iteration_count;
double filter_percent;
double filter_secondary_surround;
double filter_surround;
boolean keep_knees;
double line_reversion_threshold;
double line_threshold;
double reparameterize_improvement;
double reparameterize_threshold;
double subdivide_search;
double subdivide_surround;
double subdivide_threshold;
double tangent_surround;
} SELVALS;
#endif /* 1 */
#endif /* not TYPES_H */
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